How would you feel if you go on a vacation with your loved ones and all of sudden you get confronted by a group of strangers who look exactly like you? Especially if these are some twisted versions of you and your family members who do all the crazy things imaginable and non-imaginable to get you out of your mind, to brutally kill you. In this psychological horror triller we will see Lupita Nyong’o and Winston Duke as the WIlsons with their kids, Elisabeth Moss and Tim Heidecker as the Tylors, to fight not only for their life but also to keep their sanity. Who are these doppelgängers and what exactly do they want? Not all the nightmares happen at night.